Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:44 2012 Optimize a model with 442 rows, 441 columns and 1968 nonzeros Presolve removed 206 rows and 121 columns Presolve time: 0.01s Presolved: 236 rows, 320 columns, 2445 nonzeros Variable types: 20 continuous, 300 integer (300 binary) Root relaxation: objective 1.762447e+02, 67 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 176.24466 0 28 - 176.24466 - - 0s 0 0 189.66667 0 28 - 189.66667 - - 0s 0 0 190.33333 0 28 - 190.33333 - - 0s 0 0 190.33333 0 28 - 190.33333 - - 0s 0 0 190.33333 0 25 - 190.33333 - - 0s 0 0 190.33333 0 23 - 190.33333 - - 0s 0 0 190.33333 0 23 - 190.33333 - - 0s 0 0 190.33333 0 23 - 190.33333 - - 0s 0 2 191.00000 0 23 - 191.00000 - - 0s *11800 6190 36 311.0000000 211.16501 32.1% 10.6 4s 11901 6248 288.00000 41 23 311.00000 211.32200 32.1% 10.5 5s H12947 6140 299.0000000 211.32200 29.3% 10.6 6s *13732 5812 45 283.0000000 211.32200 25.3% 10.5 6s *13742 5365 50 274.0000000 211.32200 22.9% 10.5 6s H13791 5069 273.0000000 211.32200 22.6% 10.5 6s *13907 4764 45 271.0000000 211.32200 22.0% 10.5 6s *14075 4464 48 269.0000000 211.32200 21.4% 10.6 6s H14151 4141 264.0000000 211.32200 20.0% 10.6 7s Cutting planes: Gomory: 6 MIR: 1 Zero half: 1 Explored 18314 nodes (187190 simplex iterations) in 8.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.640000000000e+02, best bound 2.640000000000e+02, gap 0.0%